I am already updating the 26100.1 PRO A LTSC creation script that is pinned in OP #376 After testing, the OP will be updated so it can then be downloaded. Spoiler: Changelog Code: - Added support for 25H2 and 26H2 (26H2 - Build 26300 via KB5121794 and 25H2 - Build 26200 via KB5054156) - Added Repack-Update.cmd to repackage LCUs and prepare them for integration during builds. - Bug fixes - Now, if you choose 24H2 LTSC, it updates to build 26100.1742 (if you choose version 25H2 or 26H2, KB5043080 from .1742 is integrated first before integrating any other major LCU). Result: (In the ES-ES language) Spoiler: Results Code: Extract Microsoft-Windows-Client-LanguagePack-Package-amd64-es-ES.esd Creating files: 17153 of 17153 (100%) done Extracting file data: 221 MiB of 221 MiB (100%) done Applying metadata to files: 17153 of 17153 (100%) done Done extracting files. Reconstruct 26100.1 Windows 11 IoT Enterprise LTSC 2026 amd64 es-ES Mounting Image Professional Deployment Image Servicing and Management tool Version: 10.0.19041.844 Mounting image [==========================100.0%==========================] The operation completed successfully. Removing Notepad-FOD-Package (Professional) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Removing package Microsoft-Windows-Notepad-System-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Removing Apps Convert Professional to IoTEnterpriseS Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Removing package Microsoft-Windows-ProfessionalEdition~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating Client Language Pack es-ES Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Client-LanguagePack-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Set IoTEnterpriseS KEY Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Starting to install product key... Finished installing product key. The operation completed successfully. Current Edition : IoTEnterpriseS (Volume) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 The operation completed successfully. Integrating Notepad-FOD-Package (IoTEnterpriseS) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~wow64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating MSPaint FOD-Package (IoTEnterpriseS) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~wow64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating SnippingTool FOD-Package (IoTEnterpriseS) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-SnippingTool-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Packages es-ES Integrating FOD Microsoft-Windows-MSPaint-FoD-Package-amd64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-MSPaint-FoD-Package-wow64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~wow64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-Notepad-FoD-Package-amd64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-Notepad-FoD-Package-wow64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~wow64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-SnippingTool-FoD-Package-amd64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-SnippingTool-FoD-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. ========================================================= Servicing Updates Integration ========================================================= Mounting and Updating WinRE image Deployment Image Servicing and Management tool Version: 10.0.19041.844 Mounting image [==========================100.0%==========================] The operation completed successfully. Integrating Base SSU on WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_1738~31bf3856ad364e35~amd64~~26100.1738.1.3 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_1738 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Integrating Additional SSU on WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_9274~31bf3856ad364e35~amd64~~26100.9274.1.11 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_9274 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Reset Base WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 [===========================99.8%========================= ] The operation completed successfully. Save and Unmount WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image File : G:\26100.1_24H2_25H2_EnterpriseS_amd64\temp\mount\Windows\System32\Recovery\winre.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. Optimize Image WinRE Integrating Base Default SSU Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_1738~31bf3856ad364e35~amd64~~26100.1738.1.3 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_1738 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Integrating Base Default Checkpoint LCU (KB5043080) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - [==========================100.0%==========================] [==========================100.0%==========================] The operation completed successfully. Integrating Additional SSU Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1742 Processing 1 of 1 - Adding package Package_for_ServicingStack_9274~31bf3856ad364e35~amd64~~26100.9274.1.11 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_9274 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Integrating Additional LCU Package: Windows11.0-KB5120998-x64.msu Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1742 Processing 1 of 1 - [==========================100.0%==========================] [==========================100.0%==========================] Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Removing package Microsoft-Windows-ProfessionalEdition~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating Client Language Pack es-ES Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Client-LanguagePack-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Set IoTEnterpriseS KEY Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Starting to install product key... Finished installing product key. The operation completed successfully. Current Edition : IoTEnterpriseS (Volume) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 The operation completed successfully. Integrating Notepad-FOD-Package (IoTEnterpriseS) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~wow64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating MSPaint FOD-Package (IoTEnterpriseS) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~wow64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating SnippingTool FOD-Package (IoTEnterpriseS) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-SnippingTool-FoD-Package~31bf3856ad364e35~amd64~~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Packages es-ES Integrating FOD Microsoft-Windows-MSPaint-FoD-Package-amd64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-MSPaint-FoD-Package-wow64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-MSPaint-FoD-Package~31bf3856ad364e35~wow64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-Notepad-FoD-Package-amd64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-Notepad-FoD-Package-wow64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-Notepad-FoD-Package~31bf3856ad364e35~wow64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. Integrating FOD Microsoft-Windows-SnippingTool-FoD-Package-amd64-es-ES.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Microsoft-Windows-SnippingTool-FoD-Package~31bf3856ad364e35~amd64~es-ES~10.0.26100.1 [==========================100.0%==========================] The operation completed successfully. ========================================================= Servicing Updates Integration ========================================================= Mounting and Updating WinRE image Deployment Image Servicing and Management tool Version: 10.0.19041.844 Mounting image [==========================100.0%==========================] The operation completed successfully. Integrating Base SSU on WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_1738~31bf3856ad364e35~amd64~~26100.1738.1.3 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_1738 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Integrating Additional SSU on WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_9274~31bf3856ad364e35~amd64~~26100.9274.1.11 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_9274 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Reset Base WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 [===========================99.8%========================= ] The operation completed successfully. Save and Unmount WinRE Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image File : G:\26100.1_24H2_25H2_EnterpriseS_amd64\temp\mount\Windows\System32\Recovery\winre.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. Optimize Image WinRE Integrating Base Default SSU Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_1738~31bf3856ad364e35~amd64~~26100.1738.1.3 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_1738 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Integrating Base Default Checkpoint LCU (KB5043080) Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1 Processing 1 of 1 - [==========================100.0%==========================] [==========================100.0%==========================] The operation completed successfully. Integrating Additional SSU Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1742 Processing 1 of 1 - Adding package Package_for_ServicingStack_9274~31bf3856ad364e35~amd64~~26100.9274.1.11 [==========================100.0%==========================] The changes due to package Package_for_ServicingStack_9274 requires the current servicing session to be reloaded. All the packages will be processed again. The operation completed successfully. Integrating Additional LCU Package: Windows11.0-KB5120998-x64.msu Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.1742 Processing 1 of 1 - [==========================100.0%==========================] [==========================100.0%==========================] The operation completed successfully. Integrating 26H2 Enablement Package to Image Package: G:\26100.1_24H2_25H2_EnterpriseS_amd64\files\updates\enablement\Windows11.0-KB5121794-x64.cab Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26100.9278 Processing 1 of 1 - Adding package Package_for_KB5121794~31bf3856ad364e35~amd64~~26100.8966.1.0 [==========================100.0%==========================] The operation completed successfully. Adding PhotoViewer Reset Base IoTEnterpriseS Image Deployment Image Servicing and Management tool Version: 10.0.19041.844 Image Version: 10.0.26300.9278 [==========================100.0%==========================] The operation completed successfully.